The Colmi R02 is one of the cheapest smart rings on the market. It costs about $20, and is remarkably easy to hack. [Floyd Steinberg] took advantage of this to turn it into a rather unique MIDI ...
Turning A $20 Smart Ring Into A DIY MIDI Controller (Colmi R02 + WebMIDI API, Hardware And DAW) 9-52 Screenshot No comments by: Zoe Skyforest January 22, 2026 ← Cheap Smart Ring Becomes MIDI ...
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